Gilbert, Douglas R., “Folk Singer Bob Rosenthal,” Digital Collections, accessed December 14, 2025, https://digitalcollections.library.gvsu.edu/document/53751.
Black and white photograph of folk singer, Robert "Bob" Rosenthal, singing and playing an acoustic guitar on a rooftop in New York City, New York. In the photograph, a group of young women can be seen watching his performance from their apartment windows and fire escape. Scanned from the negative.